Spinning apparatus



L. CIZEK ETAL SPINNING APPARATUS Dec. 24, 1963 2 Sheets-Sheet 1 Filedsepf. 18, 1962' y s /f www w17, f @im .MM MFV M a M c u..

Dec. 24, 1963 Filed Sept. 18, 1962 L. CIZEK ETAL SPINNING APPARATUS 2Sheets-Sheet 2 United States Patent O 3,115,001 SPNNlN G APPARATUSLeopold Cizek, Erik Jirasek, Frantisek Bueil, and Josef Ripka, Usti N.Orl., Czechoslovakia, assignors to Vyzkurnny Ustav Bavlnarsky, Usti N.Orl., Czecho- Slovakia Filed Sept. 18, 1962, Ser. No. 227,977 20 Claims.(Cl. 57-58.91)

The present invention relates to a spinning apparatus, and moreparticularly to an apparatus for drawing and twisting rovings to form ayarn.

The ring spinning method in which the roving passes through drawingrolls and .through an eye to the spinning ring on which the travelerrevolves has a limited output since the speed of the traveler cannot beincreased above a certain limit, and furthermore it is not possible toprevent balloon forming during high speed operations.

Other spinning apparatus is known in which air is used for the transportof the rovings, but these devices require a separate machine forproducing compressed air, or for producing a negative suction pressure.

In another spinning apparatus, the twisting member is used for producingthe air stream, and this apparatus has the disadvantage that the suctiondepends on the speed of rotation of the twisting means.

Other spinning devices use electrostatic field or centrifugal force forachieving a parallel position of the rovings on a rotary surface. Inaccordance with one construction of the prior art, the depositedmaterial is twisted by a rotating disc having an eccentric aperturethrough which the nished yarn passes. Another known spinning apparatususes two crossed belts for twisting the rovings. However, the thicknessand tw-ist of yarn produced by `the apparatus of the prior art is notexactly uniform.

It is one object of the present invention to provide a spinningapparatus which consists of few parts, operates reliably, has a highoutput, and produces uniformly twisted yarn of constant thickness.

Another object of the invention is to provide spinning apparatus inwhich the rovings are divided into fibers which are supplied to thetwisting means -in a parallel position so that the finished yarn has auniform struct-ure.

Another object of the present invention is to provide a spinning devicein which the roving is drawn and divided by an air stream whose speedand drawing action is independent `of the speed of rotation of thetwisting means.

With these objects in View, one embodiment of the spinning apparatusaccording to the invention comprises supply means for supplying rovings,a rotary suction and drawing means having an inlet communicating withthe supply means and at least one outlet, and which is so constructedthat upon rotation of the drawing means a stream of air passes from .theinlet to the outlet to div-ide the rovings into fibers and vto blow thesame through the outlet means, and a rotary spinning or twisting meanshaving a revolving surface located opposite the outlet. The fibers arethus deposited on the revolving surface, and are guided through acentrally located guide means which either rotates with the twistingmeans, or is stationary. In this manner, a twisted yarn is produced.

ln the preferred embodiment of the invention, the roving is suppliedinto one end of a stationary tube which is continued by a rotary tubularpart of kthe drawing means so that a continuous inlet duct for .theroving, the fibers, and for -a stream of air is formed. The air issucked into the aligned tubes since the rotary suction and drawing meanshas radial outlet passages in which the air is forced to flow in anoutward direction during rotation of the drawing means.

in one embodiment of the invention the spinning or twisting means has abowl-shaped portion merging into a central tubular portion which forms arotating guide means for the twisted yarn which is transported by a pairof transporting rollers. The wide open end of the bowlshaped twistingmeans forms an outlet for the air passing through the outlets of thedrawing means and carrying the fibers to the portion of the innersur'face of the twisting means on which the rovings are deposited.

Iin another embodiment of the invention, the spinning or twisting meansis ring-shaped and has a circular inne surface which is curved in axialplanes, `and which may form part of a spherical surface. The fibers aredeposited on this surface, and guided through a guide means located inthe axis of rotation of the rotary twisting means so that the fibers aretwisted into a yarn.

The rotary suction and drawing means, and the rotary spinning ortwisting means rotate at different speeds, or in opposite directions toobtain a uniform distribution of the fibers in parallel positions on therevolving surface of a twisting means.

The novel 4features Which are considered as characteristie of theinvention are set forth in particular in the appended claims. Theinvent-ion itself, however, both as to its construction and its methodof operation, together with additional objects and advantages thereof,will be best understood from the following description of specificembodiments when read in connection with the accompanying drawings, inwhich:

FlG. l is a fragmentary sectional view of a spinning apparatus accordingto one embodiment of the invention:

FIG. 2 is a fragmentary sectional view of a spinning apparatus accordingto another embodiment of the invention: and

B1G. 3 is an exemplary embodiment of the apparatus including the windingup means and drive.

`Referring to FIG. il, a pair of feeding rollers 1 supplies Kthe rovinginto the tapered end 4 of a stationary tube 3 whose other wider end issecured to a sleeve 6. A rotary suction and drawing means 2 has atubular part 5 whose end is located in sleeve `6, and forms acontinuation of the Ifixed tube 3. The other end of the drawing means 2has two radially projecting arms with outlet passages 9 extending inopposite directions transverse to the axis of rotation of the drawingmeans 2. When suction and drawing means 2 are rotated, air is forced outof the outlet passages 9, and drawn through the aligned and coaxialtubes 3 and 5 so that the roving is drawn and fibers 18 are loosenedfrom the roving at '10 in the tube 3, and blown out of the outlets 9.

The lower end portion of the rotary drawing means 2 is located in abowl-shaped portion of a spinning or twisting means 7 which has acircular collecting surface 8 located opposite the outlets 9 so that theblown out fibers are deposited on this surface. The surface ispreferably also curved in axial planes so that its shape ispart-spherical. However, the inner surface of the chamber in thespinning or twisting means 7 may also be conical or of oval shape. Theinner surface of a tubular portion 12 merges into the inner surface ofthe bowl-shaped portion '7, the tubular portion 12 being concentric withthe axis of rotation of the twisting means 7, 12. The fibers depositedon the revolving surface 8 form a ring 19 due to the relative movementbetween the inner circular collecting surface 8 and the outlets 9. Inthe preferred embodiment of the invention, the drawing means 2 rotatesin opposite direction to the sense of rotation of the twisting rneans'7, 12. The bowl-shaped portion of the twisting means 7 has a circularedge surrounding the tubular portion 2 and defining with the same acircular outlet opening 15 through which the air blown out of passage 9escapes. A plurality of openings may be provided instead of a singleopening.

The spinning and twisting apparatus illustrated in FIG. 1 is operated asfollows:

A roving S is supplied by feed rollers 1 into the tapered end 4 of thexed tube 3. Due to the rotation of the suction and drawing means 2, anair stream is sucked into the opening in the end portion 4 and passesout of the outlets 9. Negative pressure is thus produced in tube 3, andbers 1S are loosened from the hunched roving portion in the stationarytube 3 and carried with the air stream through the rotating tube andoutlets 9 to the revolving collecting surface 8 which moves relative tothe rotating outlets 9. Since the end portion 4 is constricted, the airmoves very rapidly at the inlet end of the tube 3, and exerts a strongloosening action on the roving 10 which is divided into fibers. Thereleased ibers 18 flow in the air stream until they are thrown throughpassages 9 onto the revolving surface 8 where they are deposited inparallel positions and are formed into a ringshaped body 19 which ispressed against the collecting surface S by the centrifugal force. Therotary action of the twisting means 7 results in a continuous rolling ofthe bers and a twisted yarn is formed which is moved along wall 11 andthrough the tubular guide portion 12 by the transporting rollers 13 whenthe spinning element adheres to the fibers 19. The air passing out ofoutlet passages 9 is discharged through the outlet opening 15.

The embodiment of FIG. 2 corresponds in all constructive features to theembodiment of FIG. l, with the eX- ception of the spinning and twistingmeans. A ring 16 surrounds the part of the drawing means 2 which has theoutlets 9, and has an inner collecting surface 8 which is substantiallypart-spherical. Instead of the rotary tubular guide means 12 of theembodiment of FIG. 1, a stationary guide means 17 is provided whoseopening is located on the axis of rotation of the rotary twisting means16 and of the rotary drawing means 2.

The operation of the embodiment of FIG. 2 is the same as described withreference to FIG. 1, and the fibers are deposited in a ring-shaped body19 on the revolving surface S' when suction and drawing means 2 andspinning means 16 rotate in opposite directions. The twisted yarn 14passes through the opening in the stationary guide means 17 and istransported by the transporting rollers 13.

As shown in FIG. 3 all mechanism and their drives are secured to acarrier frame 30. Fixed to the upper part of the frame is a holder 20for the feeding rollers 1 with a pulley 53. In a downward directionthere follow further parts: a stationary part 3 of the feeding tubeconsisting of two pieces and secured to a sleeve 6 mounted on the holder21; and further a rotary part 5 of the feeding tube, said part beingmounted for rotation in a bearing body 22. A pulley 49 is keyed on tosaid feeding tube. Channels provided in the rotary part 5 of the feedingtube lead to a rotary twisting chamber 7 mounted for rotation in abearing body 23, a pulley 47 being keyed on to said chamber. Below therotating twisting chamber 7 transporting rollers 13 are accommodated andconnected to a pulley 43 provided on a holder 24 and below the rollers13 there is arranged the winding up means 25 for the yarn 14 comprisinga driving roller 31, a pulley 39 and a pressure arm 32 carrying thebobbin 33 with wound yarn. Accommodated at the other side of the frame30 is an electric motor 35 with a pulley 36 which drives the apparatuswith the aid of further driving means, such as belts 54, 55, 56, 57, 53,59, 60, 61, 62, pulleys 37, 38, 40, 41, 42, 44, 45, 46, 48, 5t), 51, 52,shafts 63, 64, 65, 66 and shaft holders 26, 27, 28, 29.

The apparatus is driven by an electric motor 35 whose torque istransmitted by the pulley 36 and belt 54 to the pulley 37 arranged on ashaft 65. From the shaft 65 movement is derived by means of the pulley38, belt 55 and pulley 39 to the driving roller 31 of the winding upmeans 25 and further by the pulley 4t), belt 56 and pulley 41 to acountershaft 63. From the countershaft 63 movement is transmitted by thepulley 42 and belt 57 to the pulley 43 of the transporting rollers 13.The pulley 5t), belt 61, pulleys 51, 52, keyed on to the shaft 66, andbelt 62 serve to drive the pulley 53 of the feeding rollers 1. Thepulley 44 and the crossed belt 58 serve to drive the pulley 45 of thecountershaft 64. From the countershaft 64 the drive is transmitted overthe pulley 46, belt 59 and pulley 47 to the rotary twisting chamber 7.The pulley 43, crossed belt 60 and pulley 49 drive the rotary part 5 ofthe two-piece feeding tube. Fibrous material supplied in a roving S bythe feeding rollers 1 is conveyed by the air stream produced due to therotation of the rotary part 5 of the two-piece feeding tube through thestationary part 3 androtating part 5 of the feeding tube into therevolving twisting chamber 7, where the material is deposited in the waydescribed above.

From the revolving twisting chamber 7 the yarn 14 is withdrawn by thetransporting rollers 13 and wound on a cylindrical bobbin 33 which,together with the woundup yarn 34, is driven by the driving roller 31provided with a groove serving for the distribution of the yarn alongthe bobbin 33.

It will be understood that each of the elements described above, or twomore together, may also find a useful application in other types ofspinning apparatus differing from the types described above.

While the invention has been illustrated and described as embodied in aspinning apparatus including a rotary drawing means producing a streamof air, and a rotary twisting means surrounding a part of the drawingmeans, it is not intended to be limited to the details shown, sincevarious modiiications and structural changes may be made withoutdeparting in any way from the spirit of the present invention.

Without further analysis, the foregoing will so fully reveal the gist ofthe present invention that others can by applying current knowledgereadily adapt it for various applications without omitting featuresthat, from the standpoint of prior art, fairly constitute essentialcharacteristics of the generic or specific aspects of this inventionand, therefore, such adaptations should and are intended to becomprehended within the meaning and range of equivalence of thefollowing claims.

What is claimed as new and desired to be secured by Letters Patent is:

1. A spinning apparatus comprising, in combination, supply means forsupplying rovings and including a stationary tube; a rotary suction anddrawing means rotating about an axis and having inlet meanscommunicating with said stationary tube and outlet means transverse tosaid axis of rotation so that upon rotation of said suction and drawingmeans the rovings drawn by an air stream into said inlet means aredisintegrated and divided into fibers therein and are blown as looselibres through said outlet means; and a rotary spinning means having arevolving surface located opposite said outlet means and moving relativeto the same so that the libres are deposited on said surface and twistedto form a twisted yarn.

2. A spinning apparatus comprising, in combination, supply means forsupplying rovings and including a stationary tube; a rotary suction anddrawing means rotating in one direction of rotation about an axis andhaving inlet means communicating with said stationary tube and outletmeans transverse to said axis of rotation so that upon rotation of saiddrawing means the rovings drawn by an air stream into said stationarytube are disintegrated and divided into fibers therein and are blown asloose libres through said outlet means; and a rotary spinning meansrotating in a direction opposite to said direction of rotation andhaving a revolving surface 1ocated opposite said outlet means and movingrelative to the same so that the libres are deposited on said surfaceand twisted to form a twisted yarn.

3. A spinning apparatus comprising, in combination, a stationary supplytube; means for feeding rovings into one end of said supply tube; arotary suction and drawing means having an axis of rotation, said rotarydrawing means having a central inlet means located opposite the otherend of said supply tube, and outlet means extending transverse to saidaxis of rotation so that upon rotation of said drawing means the rovingsdrawn by an air stream through said supply tube and into said inletmeans disintegrated and divided into fibres in said stationary supplytube by the reduced pressure in said stationary supply tube and areblown as loose fibres through said outlet means; a rotary spinning meanshaving a revolving surface located opposite said outlet means and movingrelative to the same so that the fibres passing through said outletmeans are deposited on said surface and twisted to form a twisted yarn;and means for transporting the twisted yarn.

4. A spinning apparatus comprising, in combination, a stationary supplytube; means for feeding rovings into one end of said supply tube; arotary suction and drawing means having an axis of rotation, said rotarysuction and drawing means having a central tubular portion aligned withsaid supply tube and extending along said axis of rotation, said suctionand drawing means having outlet means extending transverse to said axisof rotation so that upon rotation of said suction and drawing means therovings drawn by an air stream through said supply tube and said tubularportion, are disintegrated and divided into fibres in said stationarysupply tube by the reduced pressure in said stationary supply tube andare blown as loose fibres through said outlet means, a rotary spinningmeans having a revolving surface located opposite said outlet means andmoving relative to the same so that the fibres passing through saidoutlet means are deposited on said surface and twisted to form a twistedyarn; and means for transporting the twisted yarn.

5. A spinning apparatus comprising, in combination, a stationary supplytube having a reduced diameter at one end; means for feeding rovingsinto said one end of said supply tube; a rotary suction and drawingmeans having an axis of rotation, said rotary suction and drawing meanshaving a central tubular portion aligned with said supply tube andextending along said axis of rotation, said suction and drawing meanshaving outlet means extending transverse to said axis of rotation sothat upon rotation of said suction and drawing means the rovings drawnby an air stream through said supply tube and said tubular portion, aredisintegrated and divided into fibers in said stationary supply tube bythe reduced pressure in said stationary supply tube, and are blown asloose fibres through said outlet means; a rotary spinning means rotatingrelative to said rotary suction and drawing means having a revolvingsurface located opposite said outlet means and moving relative to thesame so that the fibres passing through said outlet means are depositedon said surface and twisted to form a twisted yarn; and means fortransporting the twisted yarn.

6. A spinning apparatus comprising, in combination, a stationary supplytube having a reduced diameter at one end; means for feeding rovingsinto said one end of said supply tube; a rotary suction and drawingmeans having an axis of rotation, said rotary suction and drawing meanshaving a central inlet means located opposite the other end of saidsupply tube, and outlet means extending transverse to said axis ofrotation so that upon rotation of said suction and drawing means therovings drawn by 1an air stream through said supply tube and into saidinlet means, are disintegrated and divided into fibres in saidstationar-y supply tube by the reduced pressure in said stationarysupply tube and are blown as loose fibres through said outlet means; arotary spinning means rotating in 1a direction opposite to the directionof rotation of said suction and drawing means having a revolving surfacelocated opposite said outlet means and moving relative to the same sothat the libres passing through said outlet means are deposited on saidsurface and twisted to form a twisted yarn; and means for transportingthe twisted yarn.

7. A spinning apparatus comprising, in combination, a stationary supplytube; means for feeding rovings into one end of said supply tube; arotary suction and drawing means having an axis of rotation, said rotarysuction and drawing means having a central tubular portion aligned withsaid supply tube and extending along said :axis of rotation, saidsuction and drawing means having outlet means extending transverse tosaid axis of rotation so that upon rotation of said suction and drawingmeans the rovings drawn by an air stream through said supply tube andsaid tubular portion are disintegrated and divided into fibres in saidstationary supply tube by the reduced pressure in said stationary supplytube and are 'blown as loose iibres through said outlet means; a rotaryspinning means rotating in a direction opposite to the direction ofrotation of said suction and drawing means having a revolving surfacelocated oppostie said outlet means and moving relative to the same sothat the libres passing through said outlet means are deposited on saidsurface and twisted to form a twisted yarn; and means for transportingthe ltwisted yarn.

8. A spinning apparatus comprising, in combination, a stationary supplytube; -means for feeding rovings into one end of said supply tube; arotary suction and drawing means having an axis of rotation, said rotarysuction and drawing means having a central tubular portion aligned withsaid supply tube and extending along said axis of rotation, said suctionand drawing means having a pair of radial outlet passages extendingtransverse to said axis of rotation so that upon rotation of saidsuction and drawing means the rovings drawn by an air stream throughsaid supply tube and said tubular portion are disintegrated and dividedinto libres in said stationary supply tube by the reduced pressure insaid stationary supply tube and are blown as loose fibres through saidoutlet passages; a rotary spinning means rotating relative to saidrotary suction and drawing means having a revolving surface locatedopposite said outlet means and moving relative to the same so that thefibres passing through said outlet means are deposited on said surfaceand twisted to form a twisted yarn; and means for transporting thetwisted yarn.

9. A spinning `apparatus comp-rising, in combination, a stationarysupply tube; means for feeding rovings into one end Vof said supplytube; a rotary suction and drawing means having an axis of rotation,said rotary suction and drawing means having a central tubular portionaligned with said supply tube and extending along said axis of rotation,said suction and drawing -means having outlet means extending transverseto said axis of rotation so that upon rotation of said suction anddrawing means the rovings drawn by an air stream through said supplytube and said tubular portion are disintegrated and divided into fibresin said stationary supply tube by the reduced pressure in saidstationary supply tube and are blown as loose fibres through said outletmeans; a rotary spinning means rotating relative to said rotary suctionand drawing means having an axis of rotation coinciding with said axisof rotation of said suction and drawing means and having a circularrevolving surface located opposite said outlet means and moving relativeto the same so that the fibres passing through said outlet means aredeposited on said surface and twisted to form a twisted yarn; and meansfor transporting the twisted yarn.

10. A spinning apparatus comp-rising, in combination, a stationarysupply tube having an axis; means for feeding rovings into one end ofsaid supply tube; a rotary suction and drawing means having an axis ofrotation coinciding with said axis, said rotary suction and drawingmeans having a central tubular portion having the same diameter as saidsupply tube and extending to the other end of said supply tube andcommunicating with the same, said suction and drawing means havingoutlet passages extending transverse to said axis of rotation so thatupon rotation of said suction and drawing means, the rovings drawn by anair stream through said supply tube and said tubular portion aredisintegrated and divided into fibres in said stationary supply tube bythe reduced pressure in said stationary supply tube and are blown asloose fibres through said outlet means; rotary twisting means rotatingrelative to said rotary suction and drawing means about an axis ofrotation coinciding with said axis of rotation of said suction anddrawing means, and having a revolving surface located opposite saidoutlet passages and moving relative to the same so that the fibrespassing through said outlet passages are deposited on said surface andtwisted to form a twisted yarn; guide means located in the region ofsaid axes for guiding the twisted yarn; and transporting means fortransporting the twisted yarn through said guide means.

1l. A spinning apparatus comprising, in combination, a stationary supplytube having an axis; means for feeding rovings into one end of saidsupply tube; a rotary suction and drawing means having an axis ofrotation coinciding with said axis, said rotary suction and drawingmeans having a central tubular portion having the same diameter as saidsupply tube and extending to the other end of said supply tube andcommunicating with the same, said suction and drawing means havingoutlet passages extending transverse to said axis of rotation so thatupon rotation of said suction and drawing means, the rovings drawn by anair stream through said supply tube and said tubular portion aredistintegrated and divided into fibres in said stationary supply tube bythe reduced pressure in said stationary supply tube and are blown asloose fibres through said outlet means; rotary twisting means rotatingrelative to said rotary suction and drawing means about an axis ofrotation coinciding with said axis of rotation of said suction anddrawing means, and having a revolving surface located opposite saidoutlet passages and moving relative to the same so that the fibrespassing through said outlet passages are deposited on said surface andtwisted to form a twisted yarn, said rotary twisting means having anaxially extending tubular guide portion for guiding the twisted yarn;and transporting means for transporting the twisted yarn through saidtubular guide portion.

12. A spinning apparatus comprising, in combination, a stationary supplytube having an axis; means for feeding rovings into one end of saidsupply tube; a rotary suction and drawing means having an axis ofrotation cinciding with said axis, said rotary suction and drawing meanshaving a central tubular portion having the same diameter as said supplytube and extending to the other end of said supply tube andcommunicating with the same, said suction and drawing means havingoutlet passages extending transverse to said axis of rotation so thatupon rotation of said suction and drawing means, the rovings drawn by anair stream through said supply tube and said tubular portion aredistintegrated and divided into fibres in said stationary supply tube bythe reduced pressure in said stationary supply tube and are blown asloose fibres through said outlet means; rotary twisting means rotatingrelative to said rotary suction and drawing means about an axis ofrotation coinciding with said axis of rotation of said suction anddrawing means, and having a revolving surface located opposite saidoutlet passages and moving relative to the same so that the fibrespassing through said outlet passages are deposited on said surface andtwisted to form a twisted yarn, said twisting means having at least oneopening adjacent said revolving surface for the discharge of air; guidemeans located in the region of said axes for guiding the twisted yarn;and transporting means for transporting the twisted yarn through saidguide means.

13. A spinning apparatus comprising, in combination, a stationary supplytube having an axis; means for feeding rovings into one end of saidsupply tube; a rotary suction and drawing means having an axis ofrotation coinciding with said axis, said rotary suction and drawingmeans having a central tubular portion having the same diameter as saidsupply tube and extending to the other end of said supply tube andcommunicating with the same, said suction and drawing means havingoutlet passages extending transverse to said axis of rotation so thatupon rotation of said suction and drawing means, the rovings drawn by anair stream through said supply tube and said tubular portion aredisintegrated and divided into fibres in said stationary supply tube bythe reduced pressure in said stationary supply tube and are blown asloose fibres through said outlet means; a rotary twisting means havingat one end a revolving surface and at the other end a tubular guideportion, and an inner surface connecting said revolving surface with theinterior of said tubular guide portion, said circular revolving surfacesurrounding the portion of said rotary suction and drawing means inwhich said outlet passages are located and moving relative to the sameso that bres passing through said outlet passages are deposited on saidsurface and are twisted to form a twisted yarn passing through saidtubular guide portion; and transporting means at the end of said tubularguide portion for transporting the twisted yarn.

14. A spinning apparatus comprising, in combination, a stationary supplytube having an axis; means for feeding rovings into one end of saidsupply tube; a rotary suction and drawing means having an axis ofrotation coinciding with said axis, said rotary suction and drawingmeans having a central tubular portion having the same diameter as saidsupply tube and extending to the other end of said supply tube andcommunicating with the same, said suction and drawing means havingoutlet passages extending transverse to said axis of rotation so thatupon rotation of said suction and drawing means, the rovings drawn by anair stream through said supply tube and said tubular portion aredisintegrated and divided into libres in said stationary supply tube bythe reduced pressure in said stationary supply tube and are blown asloose fibres through said outlet means; a rotary twisting means rotatingabout an axis of rotation coinciding with said axis of rotation of saidsuction and drawing means and relative to said suction and drawingmeans, said twisting means having at one end a circular revolvingsurface concentric with said axis and at the other end a tubular guideportion concentric with said axis and having a diameter smaller than thediameter of said revolving surface, and an inner surface connecting saidrevolving surface with the interior of said tubular guide portion, saidcircular revolving surface surrounding the portion of said rotarysuction and drawing means in which said outlet passages are located andmoving relative to the same so that fibres passing through said outletpassages are deposited on said surface and are twisted to form a twistedyarn passing through said tubular guide portion; and transporting meansat the end of said tubular guide portion for transporting the twistedyarn.

15. A spinning apparatus as set forth in claim 14 wherein said circularrevolving surface is curved in axial planes and defines an outletopening for air with said central tubular portion of said suction anddrawing means.

16. A spinning apparatus as set forth in claim 14 and including a sleevefixed to said other end of said supply tube and surrounding the end ofsaid central tubular portion of said suction and drawing means.

17. A spinning apparatus comprising, in combination, a stationary supplytube having an axis; means for feeding rovings into one end of saidsupply tube; a rotary suction and drawing means having an axis ofrotation coinciding with said axis, said rotary suction and drawingmeans having a central tubular portion having the same diameter as saidsupply tube and extending to the other end of said supply tube andcommunicating with the same, said suction and drawing means havingoutlet passages extending transverse to said axis of rotation so thatupon rotation of said drawing means, the rovings drawn by an air streamthrough said supply tube and said tubular portion are disintegrated anddivided into fibres in said stationary supply tube by the reducedpressure in said stationary supply tube and are blown as loose fibresthrough said outlet means; rotary twisting means rotating relative tosaid rotary suction and drawing means about an axis of rotationcoinciding with said axis of rotation of said suction and drawing meansand having a revolving surface located opposite said outlet passage andmoving relative to the same so that the fibres passing through saidoutlet passages are deposited on said surface and twisted to form atwisted yarn; a fixed guide means located in the region of said axes forguiding the twisted yarn; and transporting means for transporting thetwisted yarn through said guide means.

18. A spinning apparatus comprising, in combination, supply means forsupplying rovings and including a stationary tube; a rotary suction anddrawing means rotating about an axis and having inlet meanscommunicating with said stationary tube and outlet means transverse tosaid axis of rotation so that upon rotation of said suction and drawingmeans the rovings drawn by an air stream into said stationary tube aredisintegrated and divided into fibres therein and are blown as loosefibres through said outlet means; a rotary twisting means having arevolving surface concentric with said axis located opposite said outletmeans and moving relative to the same so that the fibres are depositedon said surface and twisted to form a twisted yarn; guide means forguiding the twisted yarn from said surface to a position located in thesaid axis; and transporting means for transporting the twisted yarnthrough said guide means.

19. A spinning apparatus comprising, in combination, supply means forsupplying rovings and including a stationary tube; a rotary suction anddrawing means rotating about an axis and having inlet meanscommunicating with said supply means and outlet means transverse to saidaxis of rotation so that upon rotation of said suction and drawing meansthe rovings drawn by an air stream into said inlet means aredisintegrated and divided into fibres therein and are blown as loosefibres through said outlet means; a rotary twisting means having arevolving surface concentric with said axis located opposite said outletmeans and moving relative to the same so that the fibres are depositedon said surface and twisted to form a twisted yarn; guide means forguiding the twisted yarn from said surface to a position located in thesaid axis; and transporting means for transporting the twisted yarnthrough said guide means, said twisting means having an outlet for airadjacent said revolving surface.

20. A spinning apparatus comprising, in combination, a stationary supplytube having an axis and a length adapted to be at least equal to themaximal length of fibers to be spun; means for feeding rovings into oneend of said supply tube; a rotary suction and drawing means having anaxis of rotation coinciding with said axis, said rotary suction anddrawing means having a central tubular portion having the same diameteras said supply tube and extending to the other end of said supply tubeand communicating with the same, said suction and drawing means havingoutlet passages extending transverse to said axis of rotation so thatupon rotation of said suction and drawing means, the rovings drawn by anair stream through said supply tube and said tubular portion aredisintegrated and divided into fibres in said stationary supply tube bythe reduced pressure in said stationary supply tube and are blown asloose fibres through said outlet means; rotary suction and twistingmeans rotating relative to said rotary drawing means about an axis ofrotation coinciding with said axis of rotation of said suction anddrawing means, and having a revolving surface located opposite saidoutlet passages and moving relative to the same so that the fibrespassing through said outlet passages are deposited on said surface andtwisted to form a twisted yarn; guide means located in the region ofsaid axes for guiding the twisted yarn; and transporting means fortransporting the twisted yarn through said guide means.

References Cited in the file of this patent UNITED STATES PATENTS1,500,931 Hooper July 8, 1924 2,853,847 Keeler et al Sept. 30, 1958FOREIGN PATENTS 716,917 Germany Feb. 2, 1942 477,259 Great Britain Dec.24, 1937 266,857 Switzerland May 16, 1950 328,037 Switzerland Apr. 15,1958

1. A SPINNING APPARATUS COMPRISING, IN COMBINATION, SUPPLY MEANS FORSUPPLYING ROVINGS AND INCLUDING A STATIONARY TUBE; A ROTARY SUCTION ANDDRAWING MEANS ROTATING ABOUT AN AXIS AND HAVING INLET MEANSCOMMUNICATING WITH SAID STATIONARY TUBE AND OUTLET MEANS TRANSVERSE TOSAID AXIS OF ROTATION SO THAT UPON ROTATION OF SAID SUCTION AND DRAWINGMEANS THE ROVINGS DRAWN BY AN AIR STREAM INTO SAID INLET MEANS AREDISINTEGRATED AND DIVIDED INTO FIBERS THEREIN AND ARE BLOWN AS LOOSEFIBRES THROUGH SAID OUTLET MEANS; AND A ROTARY SPINNING MEANS HAVING AREVOLVING SURFACE LOCATED OPPOSITE SAID OUTLET MEANS AND MOVING RELATIVETO THE SAME SO THAT THE FIBRES ARE DEPOSITED ON SAID SURFACE AND TWISTEDTO FORM A TWISTED YARN.